MB39A214APFT-G-JNERE1 Datasheet, PDF (9/56 Pages) Fujitsu Component Limited. – 2ch DC/DC converter IC with PFM/ PWM synchronous rectification

MB39A214A
Parameter
Symbol
Pin
No.
Condition
Value
Unit
Min Typ Max
Output Block
[DRV]
BST diode voltage
Bias current
Preset value 1
conditions
V_F
I_BST
V_FREQ1
1,12 I_F = 10 mA
LX1, LX2 = 0 V,
1,12
BST1, BST2 = 5.2 V
FREQ pin:
7
GND connection
0.75 0.85 0.95 V
11 15 22 µA
0
— 0.2 V
Switching
Frequency
Control Block
[FREQ]
Preset value 2
conditions
Preset value 3
conditions
FREQ pin
output voltage
V_FREQ2 7 FREQ pin: OPEN
0.6 — 1.2 V
V_FREQ3 7 FREQ pin: VB connection
2.4
— VB V
V_FREQ
7 FREQ = OPEN
0.63 0.9 1.17 V
PFM/PWM mode
conditions
PAF function
negate
V_PFM1
MODE pin:
17
GND connection
0
— 0.2 V
PFM Control
Circuit Block
[MODE]
PFM/PWM mode
conditions
PAF function
assert
V_PFM2 17 MODE pin : OPEN
0.6 — 1.2 V
PWM-fixed mode
conditions
V_PWM 17 MODE pin : VB connection 4.6 — VB V
PAF frequency
MODE pin voltage
ON condition
f_PAF
V_MODE
V_ON
— Ta = − 30°C to +85°C
17 MODE = OPEN
2, 11 EN1, EN2 pins
30 45 — kHz
0.63 0.9 1.17 V
2.64 — — V
Enable Block
[EN1 , EN2]
OFF condition
Hysteresis width
V_OFF
V_H
2, 11 EN1, EN2 pins
2, 11 EN1, EN2 pins
— — 0.66 V
— 0.4* — V
Input current
I_EN 2, 11 EN1, EN2 = 5V
11 15 22 µA
Standby current
I_CCS
19 EN1, EN2 = 0V
—
0
10 µA
Power Supply
Current
Power supply
current during idle
period
Power supply
current during
operation
LX1, LX2 = 0 V
BST1, BST2 :
I_CC1
19
VB connection
FB1, FB2 = 0.75 V
LX1, LX2 = 0V
BST1, BST2 :
I_CC2
19
VB connection
FB1, FB2 = 0.6 V
— 600 860 µA
— 1200 1700 µA
*: This parameter is not be specified. This should be used as a reference to support designing the circuits.
DS405-00007-1v0-E
9